You have very strong type treatment in all of these. Would be good to try to get the tagline in the design if possible. Icons are another story. #52 is definitely more Asian than North American in feel - it is certainly different than what we might normally see, but perhaps just too much different. The icon in #51 and #15 is a little bit too abstract... what we are looking for is something that "says what it does, does what it says" - we don't want our site visitors to have to work very hard at all to figure out what we are all about.
Thank you very much for your effort here. Please keep at it. Type treatment very good.